[(1R,3S,7R,8E,11S,12S,13E,15S,17R,21R,23S)-17-[[tert-butyl(dimethyl)silyl]oxymethyl]-21-[tert-butyl(diphenyl)silyl]oxy-11-hydroxy-13-(2-methoxy-2-oxoethylidene)-10,10-dimethyl-5-methylidene-19-oxo-18,27,28,29-tetraoxatetracyclo[21.3.1.13,7.111,15]nonacos-8-en-12-yl] octanoate 在
臭氧 、
硫脲 作用下,
以
二氯甲烷 、
甲醇 为溶剂,
反应 0.25h,
以88%的产率得到[(1R,3R,7R,8E,11S,12S,13E,15S,17R,21R,23S)-17-[[tert-butyl(dimethyl)silyl]oxymethyl]-21-[tert-butyl(diphenyl)silyl]oxy-11-hydroxy-13-(2-methoxy-2-oxoethylidene)-10,10-dimethyl-5,19-dioxo-18,27,28,29-tetraoxatetracyclo[21.3.1.13,7.111,15]nonacos-8-en-12-yl] octanoate